Yes, as I stated in an earlier reply the Samsung correctly switched it's contrast and backlight settings for HDR playback and there was also an initial flagging up on the screen that an HDR film was about to play, so all correct. Perhaps your examples are at fault, I will check this later when I have downloaded them. Regarding SPMC there is one particular feature I like, it is when you press the menu button on the remote it provides in the top left hand corner all the details of the file like cpu usage, output info, and output stream bitrate(I like this particularly) plus others, excellent. The only real downside for me using SPMC is that I need my Logitech K400 to navigate the menus properly.